Globally unique resources that provide access to data management services and serve as the parent namespace for the services.
Currently, the tag contributor role can't apply tags to resources or resource groups through the portal. It can apply tags to subscriptions through the portal. It supports all tag operations through PowerShell and REST API. More information on this can be found on this page.
-------------------------------
Please don’t forget to "Accept the answer" and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.